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0xCERT Security Advisory 0xCERT-2026-0189
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Advisory-ID:  0xCERT-2026-0189
Severity:     Medium
Published:    2026-04-18T01:15:10.000Z
Updated:      2026-10-08T22:47:28.617Z
Chains:       n/a
URL:          https://www.0xcert.com/advisory/0xCERT-2026-0189

Title: Zebra Vulnerable to Denial of Service via Interrupted JSON-RPC Requests from Authenticated Clients

Summary
- -------
Zebra Vulnerable to Denial of Service via Interrupted JSON-RPC Requests from Authenticated Clients. A vulnerability in Zebra's JSON-RPC HTTP middleware allows an authenticated RPC client to cause a Zebra node to crash by disconnecting before the request body is fully received.

Details
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Summary
A vulnerability in Zebra's JSON-RPC HTTP middleware allows an authenticated RPC client to cause a Zebra node to crash by disconnecting before the request body is fully received.

Affected
- - zebra-rpc (rust) >= 1.0.0-beta.45, < 6.0.2 — fixed in 6.0.2
- - zebrad (rust) >= 2.2.0, < 4.3.1 — fixed in 4.3.1

Severity
Medium (CVSS 6.9), as rated by the upstream advisory.

Recommended actions
- - Upgrade zebra-rpc to 6.0.2 or later
- - Upgrade zebrad to 4.3.1 or later

Source & attribution
This 0xCERT advisory summarises GHSA-29x4-r6jv-ff4w / CVE-2026-41585 from the GitHub Advisory Database, credited upstream to upbqdn, mpguerra, conradoplg: https://github.com/advisories/GHSA-29x4-r6jv-ff4w. Details may change; refer to the original source for the authoritative record.

References
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- - https://github.com/advisories/GHSA-29x4-r6jv-ff4w
- - CVE-2026-41585
- - https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-29x4-r6jv-ff4w
- - https://nvd.nist.gov/vuln/detail/CVE-2026-41585

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